How to use windows Credential with XML reader in C#?

Question

I have a XML URL and it use windows credential. I wrote a test code but I have no idea how to use in XmlReader.

Could anyone help me to authentication code on Xmlreader?

Here is simple base code.

            WebRequest request = WebRequest.Create(@"https://xmllink?format=XML");
            request.Credentials = new NetworkCredential(@"username", "password");

            using (WebResponse response = request.GetResponse())
            {
                using (XmlReader reader = XmlReader.Create(response.GetResponseStream()))
                {
                    while (reader.Read())
                    {
                        if (reader.NodeType == XmlNodeType.Element && reader.Name == "title")
                        {
                            string s1 = reader.ReadElementString();
                            Console.WriteLine("Name = " + s1);

                        }
                        
                    }
                    // Blah blah...
                }
            }

Thank you